After living in the burbs for all my life, I was tired of creepy the neighbor next door watching me in my own yard, neighborhood kids playing football in my front yard & damaging things, the other next door neighbor allowing there dog to do it's business in my yard, etc.... so I bought a great fixer upper on a 10 acre completely private lot. No need for curtains it's so private. Problem is, I have a beautiful creek I own on my property & the neighbors on the street behind me allow their children to go down there & play. Same problem, different place! In the suburban neighborhood I just let it go, realizing thats what happens when you live so close to everyone. Anyway I am trying to think of a nice way to handle this without being the "mean lady that lives behind us". I was thinking, the next time I find some kids on my property that I would give them a piece of paper with my name & number & send them home to have their parents call me. Then I would nicely explain that if their children want to come on my property I would like them to alway be accompanied by a parent(not just an older child) & that I would ask that the parent call me first to see if it is a good time for me & to let me know what time they will be here & for how long. Even though I realize they are the ones in the wrong, I still don't want to start something where they just wait for me to mess up somehow so they can complain to me. I just want to remind them about common courtesy. I never let my son go play in other peoples yards unless he was invited when he was young. If we wanted to hike in the woods we went to a park. Let me know how you would feel if you were the kids parents & I was saying it this way to you, would you understand?